edu.ucar.opensky::articles:23586 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:03:09.624469 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7d50r6c Can the Madden-Julian oscillation affect the Antarctic total column ozone? 2020-08-16T00:00:00Z publication https://n2t.org/ark:/85065/d7d50r6c https://doi.org/10.1029/2020GL088886 Yang, C. author Smith, Anne K. author Li, T. author Kinnison, Douglas E. author Li, J. author Dou, X. author UCAR/NCAR - Library publisher The effect of the Madden-Julian Oscillation (MJO) on springtime Antarctic ozone variations is revealed for the first time from multi-satellite reanalysis and model simulations. Twenty to 30 days after MJO Phase 8 (P8), Antarctic total column ozone (TCO) anomalies significantly decrease by up to -15 DU, associated with a wave-1 response at around 60 degrees S. After MJO P8, MJO-related geopotential height anomalies in the southern hemispheric (SH) Indian Ocean emanate from subtropics to polar regions, leading to suppressed upward and poleward propagation of planetary waves (PWs) and weakened Brewer-Dobson circulation in the SH stratosphere. This in turn results in less ozone transport from midlatitudes into the polar region and thus a negative polar TCO response. Dynamical transport plays a dominant role in modulating the Antarctic TCO after MJO P8. The magnitude of transient changes due to chemical processes is relatively weak than that caused by dynamical transport. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2020 American Geophysical Union. None eng geoscientificInformation